Grubby little secrets #1

online-poker-secrets copy 2There are so many aspects of the wind industry that its supporters would prefer you not to know.

The inefficiency of turbines, their harm to the environment, the scandalous ways wind farm companies operate, the need for back-up generation, the traumatic impact on local communities etc.

Here are a couple more. Both reports appeared earlier this year – but deserve an airing here.

The first is on massive environmental degradation in China caused by one element of wind turbine construction. The second is out of Texas and reports wind farms actually contribute to global warming.

As Vermont environmental lawyer Stephanie Kaplan said: “Really, if it weren’t wind, the environmental groups would be out there screaming their heads off about the destruction that’s going on.”

From The Daily Mail:

The reality is that, as Britain flaunts its environmental credentials by speckling its coastlines and unspoiled moors and mountains with thousands of wind turbines, it is contributing to a vast man-made lake of poison in northern China. This is the deadly and sinister side of the massively profitable rare-earths industry that the ‘green’ companies profiting from the demand for wind turbines would prefer you knew nothing about.

rare earth China

Poisoned earth – wind turbine syndrome of a different kind.

And from The Telegraph:

Satellite data over a large area in Texas, that is now covered by four of the world’s largest wind farms, found that over a decade the local temperature went up by almost 1C as more turbines are built.

This could have long term effects on wildlife living in the immediate areas of larger wind farms.

It could also affect regional weather patterns as warmer areas affect the formation of cloud and even wind speeds.

About stopthesethings

We are a group of citizens concerned about the rapid spread of industrial wind power generation installations across Australia.

Comments

  1. Absurdly inefficient

    Wind is made up of moving air molecules which have mass – though not a lot.
    Any moving object with mass carries kinetic energy in an amount which is
    given by the equation:

    Kinetic Energy = 0.5 x Mass x Velocity2 [velocity squared]

    where the mass is measured in kg, the velocity in m/s, and the energy is
    given in joules.

    Air has a known density (around 1.23 kg/m3 [metres cubed] at sea level), so
    the mass of air
    hitting a wind turbine (which sweeps a known area) each second is given by
    the following equation:

    Mass/sec (kg/s) = Velocity (m/s) x Area (m2) x Density (kg/m3)

    And therefore, the power (i.e. energy per second) in the wind hitting a wind
    turbine with a certain swept area is given by simply inserting the mass per
    second calculation into the standard kinetic energy equation given above
    resulting in the following vital equation:

    Power = 0.5 x Swept Area x Air Density x Velocity3

    where Power is given in Watts (i.e. joules/second), the Swept area in square
    metres, the Air density in kilograms per cubic metre, and the Velocity in
    metres per second.

    The turbine has a rotor blade diameter of 80 metres and so the rotors sweep
    an area of PI x (diameter/2)2 = 5026 m2. We know the air density is 1.23
    kg/m3. The turbine is rated at 2MW in 30mph (14m/s) winds, and so putting in
    the known values we get:

    Wind Power = 0.5 x 5026 x 1.23 x (14 x 14 x 14)

    …which gives us a wind power of around 8,500,000 Watts. Why is the power
    of the wind (8.5MW) so much larger than the rated power of the turbine
    generator (2MW)? Because industrial wind turbines are absurdly inefficient
    piles of junk. This is under ideal conditions. Under less than ideal
    conditions the problems become worse.

    And look up Betz Law. It is from the 1920

  2. Congratulations on your new site – a much-needed addition to the information base in Australia.
    Keep up the good work!

  3. We suspect that in the end, what will be discovered – again – is that there is no free lunch. We simply have too many people on this planet for any form of energy production to be sustainable.

Trackbacks

  1. […] will remember our earlier stories on the use of rare earths in wind turbines  (here and here), and how the demand for these materials is causing environmental havoc in […]

  2. […] will remember our earlier stories on the use of rare earths in wind turbines  (here and here), and how the demand for these materials is causing environmental havoc in […]

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